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skip writes for data that hasn't been loaded, fixes crash in Wally wo Sagase. (nw)

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This commit is contained in:
smf- 2018-07-30 15:08:11 +01:00
parent ab07e73142
commit dc45fa90cb
1 changed files with 3 additions and 1 deletions
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4
src/mame/drivers/vgmplay.cpp
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@ -556,7 +556,9 @@ uint32_t vgmplay_device::handle_pcm_write(uint32_t address)
uint32_t dst = m_file->read_dword(m_pc+6) & 0xffffff;
uint32_t size = m_file->read_dword(m_pc+9) & 0xffffff;
if (type == 0x01) {
if (m_data_streams->size() <= type || m_data_streams[type].size() <= src + size)
logerror("ignored pcm ram writes src %x dst %x size %x type %02x\n", src, dst, size, type);
else if (type == 0x01) {
for (int i = 0; i < size; i++)
m_io->write_byte(A_RF5C68RAM + dst + i, m_data_streams[type][src + i]);
} else if (type == 0x02) {